Wiseman Threading Tools Second Lead Metric HSS Tap Right Hand - M64x4

Tackle large-diameter internal threads with confidence using the Wiseman Second Lead Metric HSS Tap. This high-speed steel ground thread tap is uncoated for broad compatibility and reliable performance in a range of common metals. Sized to M64x4 with a right-hand, second-lead geometry, it’s built for efficient, accurate tapping in metric applications that demand robustness and precision.

Key specifications that matter

• Material: High-speed steel (HSS) for durability under heat generated during tapping.
• Finish: Uncoated, ideal for use with standard cutting fluids and broad metal compatibility.
• Thread type: Right-hand, second lead (double-start) design to reduce turning effort and speed up threading.
• Size and standard: Metric M64x4 with ISO 529 dimensions for consistent, interchangeable results.
• Purpose: General-purpose internal-thread tap tailored for larger metric holes.

Why the second-lead design matters

The second-lead geometry provides a faster path to full depth, meaning fewer turns and quicker completion on large-thread jobs. This translates to higher productivity in production settings and easier hand tapping on sizable components. Precise fluting supports smooth chip evacuation and steadier operation, even in tougher materials.

Ideal use cases

• Fabrication and repair of large internal threads in steel, cast iron, and aluminum components.
• Automotive, industrial machinery, and heavy equipment maintenance where metric M64x4 threads are common.
• Prototype and limited-production work requiring reliable, repeatable metric threading.

Best practices for optimal results

• Pre-drill to the recommended hole size for M64x4 to ensure proper thread engagement and strength.
• Apply an appropriate tapping fluid or cutting oil to reduce heat and extend tap life.
• Use a tapping wrench or machine tap setup to maintain alignment and prevent cross-threading.
• Tap with steady, clockwise motion; back off periodically to break chips and clear the thread.
• Clean the tap after use and store it dry in a protected environment to preserve precision.

With Wiseman’s legacy of dependable threading tools, this Second Lead Metric HSS Tap delivers reliable, high-precision internal threads for demanding projects. Equip your workshop with a tap that balances speed, accuracy, and durability for metric threading tasks.